An early theory of why babies enjoy peekaboo is that they are surprised when things come back after being out of sight.

早期，人们认为婴幼儿喜欢玩躲猫猫的原因是他们惊讶于一些东西消失后又神奇重现。

youdao

Jacky: Why did you come back early from your vacation?

你怎么休假回来这么早？

youdao

Jacky: Why did you come back early from your vacation?

你怎么休假回来这么早？

youdao